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19 April 2024

» pubmed » pmid16208364

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Discovery of the short gamma-ray burst GRB 050709
J S Villasenor ; D Q Lamb ; G R Ricker ; J-L Atteia ; N Kawai ; N Butler ; Y Nakagawa ; J G Jernigan ; M Boer ; G B Crew ; T Q Donaghy ; J Doty ; E E Fenimore ; M Galassi ; C Graziani ; K Hurley ; A Levine ; F Martel ; M Matsuoka ; J-F Olive ; G Prigozhin ; T Sakamoto ; Y Shirasaki ; M Suzuki ; T Tamagawa ; R Vanderspek ; S E Woosley ; A Yoshida ; J Braga ; R Manchanda ; G Pizzichini ; K Takagishi ; M Yamauchi ;
Date:	6 Oct 2005
Journal:	Nature, 437 (7060), 855-8
Abstract:	Gamma-ray bursts (GRBs) fall into two classes: short-hard and long-soft bursts. The latter are now known to have X-ray and optical afterglows, to occur at cosmological distances in star-forming galaxies, and to be associated with the explosion of massive stars. In contrast, the distance scale, the energy scale and the progenitors of the short bursts have remained a mystery. Here we report the discovery of a short-hard burst whose accurate localization has led to follow-up observations that have identified the X-ray afterglow and (for the first time) the optical afterglow of a short-hard burst; this in turn led to the identification of the host galaxy of the burst as a late-type galaxy at z = 0.16 (ref. 10). These results show that at least some short-hard bursts occur at cosmological distances in the outskirts of galaxies, and are likely to be caused by the merging of compact binaries.
Source:	PubMed, pmid16208364 doi: 10.1038/nature04213
Other source:	[GID 967690] astro-ph/0510190
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